As I already mentioned I consider the best indicator of accuracy the standard deviation of daily deviations since that is a characteristic of each and every piece of calibre and cannot be adjusted by a screwdriver.

I devided the stabdard deviation values by the 86400 seconds of a day and put it onthe chart below.

A kvarcórák esetében a szimulált napi eltérések szórását használtam.

Az elektromechanikus karóra egyszerüen zsákutca volt.

A hangvillás volt a természetes átmenet a mechanikus és a kvarc között

Let us see the relationship from another point of view.
Let us put the frequency of the calibres on horizontal axis.
It is easier to use logarithmic scale on that axis.
Vertical axis shows the standard deviation of the daily deltas. Let us display those values on bar-chart.